<template>
    <div class="header">
        <div class="collapse-btn" @click="collapseChage">
            <i class="el-icon-menu"></i>
        </div>
        <div class="logo">后台管理系统</div>
        <div class="header-right">
            <div class="header-user-con">
                <!--全屏显示-->
                <div class="btn-fullscreen" @click="handleFullScreen">
                    <el-tooltip effect="dark" :content="fullscreen?`取消全屏`:`全屏`" placement="bottom">
                        <i class="el-icon-rank"></i>
                    </el-tooltip>
                </div>
                <!--消息中心-->
                <div class="btn-bell">
                    <el-tooltip effect="dark" :content="message?`有${message}条未读消息`:`消息中心`" placement="bottom">
                        <router-link to="/tabs">
                            <i class="el-icon-bell"></i>
                        </router-link>
                    </el-tooltip>
                    <span class="btn-bell-badge" v-if="message"></span>
                </div>
                <!--用户头像-->
                <div class="user-avator">
                    <img src="../static/img/img.jpg" alt="">
                </div>
                <!--用户下拉菜单-->
                <el-dropdown class="user-name" trigger="click" @command="handleCommand">
                    <span class="el-dropdown-link">
                        {{username}}<i class="el-icon-caret-bottom"></i>
                    </span>
                    <el-dropdown-menu slot="dropdown">
                        <a href="http://www.yasong34.cn">
                            <el-dropdown-item command="a">关于闫亚松</el-dropdown-item>
                        </a>
                        <a href="http://www.yasong34.cn">
                            <el-dropdown-item command="a">项目地址</el-dropdown-item>
                        </a>
                        <el-dropdown-item command="loginout" divided>退出登录</el-dropdown-item>
                    </el-dropdown-menu>
                </el-dropdown>

            </div>

        </div>
    </div>
</template>

<script>
    import Bus from 'common/js/bus'
    import Cookie from 'js-cookie'
    export default {
        name: "header-top",
        data(){
            return {
                collapse: false,
                fullscreen: false,
                name: 'linxin',
                message: 2
            }
        },
        computed:{
            username(){
                let username = localStorage.getItem('ms_username');
                return username ? username : this.name;
            }
        },
        mounted(){
            if(document.body.clientWidth < 1500){
                this.collapseChage();
            }
        },
        methods:{
            //侧边栏
            collapseChage(){
                this.collapse = !this.collapse;
                Bus.$emit('collapse',this.collapse);
            },
            // 全屏事件
            handleFullScreen(){
                let element = document.documentElement;
                if (this.fullscreen) {
                    if (document.exitFullscreen) {
                        document.exitFullscreen();
                    } else if (document.webkitCancelFullScreen) {
                        document.webkitCancelFullScreen();
                    } else if (document.mozCancelFullScreen) {
                        document.mozCancelFullScreen();
                    } else if (document.msExitFullscreen) {
                        document.msExitFullscreen();
                    }
                } else {
                    if (element.requestFullscreen) {
                        element.requestFullscreen();
                    } else if (element.webkitRequestFullScreen) {
                        element.webkitRequestFullScreen();
                    } else if (element.mozRequestFullScreen) {
                        element.mozRequestFullScreen();
                    } else if (element.msRequestFullscreen) {
                        // IE11
                        element.msRequestFullscreen();
                    }
                }
                this.fullscreen = !this.fullscreen;
            },
            handleCommand(command) {
                if(command=='loginout'){
                    this.getAjax('admin/logout').then(res=>{
                        if(res.code){
                            Cookie.remove('access_token');
                            this.$message({
                                message: res.msg,
                                type: 'success'
                            });
                            this.$router.push('/login');
                        }
                    });
                }

            }
        }
    }
</script>

<style scoped lang="scss">
    .header{
        position: relative;
        box-sizing: border-box;
        width: 100%;
        height: 70px;
        font-size: 22px;
        color: #fff;
        .logo{
            line-height: 70px;
            float: left;
            width: 250px;
        }
    }
    .collapse-btn{
        float: left;
        padding: 0 21px;
        cursor: pointer;
        line-height: 70px;
    }
    .header-right{
        float: right;
        padding-right: 30px;
        .header-user-con{
            display: flex;
            height: 70px;
            align-items: center;
        }
    }
    .btn-fullscreen{
        transform:rotate(45deg);
        margin-right: 5px;
        font-size: 24px;
    }
    .btn-bell,.btn-fullscreen{
        position: relative;
        width: 30px;
        height: 30px;
        text-align: center;
        -webkit-border-radius: 15px;
        -moz-border-radius: 15px;
        border-radius: 15px;
        cursor: pointer;
    }
    .btn-bell-badge{
        position: absolute;
        right: 0;
        top: -2px;
        width: 8px;
        height: 8px;
        border-radius: 4px;
        background: #f56c6c;
        color: #fff;
    }
    .btn-bell .el-icon-bell{
        color: #fff;
    }
    .user-avator{
        margin-left: 10px;
        img{
            display: block;
            width: 40px;
            height: 40px;
            -webkit-border-radius: 50%;
            -moz-border-radius: 50%;
            border-radius: 50%;
        }
    }
    .user-name{
        margin-left: 10px;
    }
    .el-dropdown-link{
        color: #fff;
        cursor: pointer;
        font-size: 16px;
    }
</style>